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How to Read Long-Range Weather Forecasts

Long-range predictions show weather trends in temperatures and precipitation. For example, will the winter be colder or warmer than average? Will there be more or less snow than what's typical for your area? Our famous predictions (traditionally 80% accurate) are made 18 months in advance, and meant to help you make more informed decisions for long-term planning.

Annual Weather Summary: November 2016 to October 2017

Winter will be colder than normal, with above-normal precipitation and snowfall. The coldest periods will be in early to mid-January, late January, and late February, with the snowiest periods in mid- and late December, early January, and mid-February.

April and May will be drier than normal, with near-normal temperatures.

Summer will be cooler than normal, with rainfall above normal, except in eastern Ontario. The hottest periods will be in mid-July and mid-August.

September and October will be cooler than normal, with near-normal precipitation.